100013303521 has 2 divisors, whose sum is σ = 100013303522. Its totient is φ = 100013303520.

The previous prime is 100013303479. The next prime is 100013303549. The reversal of 100013303521 is 125303310001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54039511296 + 45973792225 = 232464^2 + 214415^2 .

It is an emirp because it is prime and its reverse (125303310001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 100013303521 - 2⁷ = 100013303393 is a prime.

It is not a weakly prime, because it can be changed into another prime (100013303561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50006651760 + 50006651761.

It is an arithmetic number, because the mean of its divisors is an integer number (50006651761).

Almost surely, 2^100013303521 is an apocalyptic number.

It is an amenable number.

100013303521 is a deficient number, since it is larger than the sum of its proper divisors (1).

100013303521 is an equidigital number, since it uses as much as digits as its factorization.

100013303521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 270, while the sum is 19.

Adding to 100013303521 its reverse (125303310001), we get a palindrome (225316613522).

The spelling of 100013303521 in words is "one hundred billion, thirteen million, three hundred three thousand, five hundred twenty-one".